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Date: Mon, 17 Aug 2026 11:24:14 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Vitaliy Sochnev <sochnev.v.74@gmail.com>
Cc: Lorenzo Bianconi <lorenzo@kernel.org>, Andrew Lunn
 <andrew+netdev@lunn.ch>, "David S. Miller" <davem@davemloft.net>, Eric
 Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>,
 stable@vger.kernel.org, linux-arm-kernel@lists.infradead.org (moderated
 list:AIROHA ETHERNET DRIVER), linux-mediatek@lists.infradead.org (moderated
 list:AIROHA ETHERNET DRIVER), netdev@vger.kernel.org (open list:AIROHA
 ETHERNET DRIVER), linux-kernel@vger.kernel.org (open list)
Subject: Re: [PATCH net v2] net: airoha: npu: load the firmware without the
 sysfs fallback
Message-ID: <20260817112414.0e82a395@kernel.org>
In-Reply-To: <20260811181717.19339-1-sochnev.v.74@gmail.com>
References: <20260811181717.19339-1-sochnev.v.74@gmail.com>
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On Tue, 11 Aug 2026 19:16:59 +0100 Vitaliy Sochnev wrote:
> airoha_npu_load_firmware() maps a missing firmware file to -EPROBE_DEFER
> so that the NPU can be brought up once the rootfs carrying /lib/firmware
> has been mounted. That mapping holds only as long as request_firmware()
> reports -ENOENT.

Okay, but AFAIU this is a hack. AFAIU PROBE_DEFER is not meant to
be used for FW loading. The driver module should live on the same
'partition' as the firmware. Either have them both available in initrd,
or have neither?